2 /**********************************************************************
3 Copyright (C) FrontAccounting, LLC.
4 Released under the terms of the GNU General Public License, GPL,
5 as published by the Free Software Foundation, either version 3
6 of the License, or (at your option) any later version.
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10 See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
11 ***********************************************************************/
13 // General database functions common for all modules.
15 //-------------------------------------------------------------------
16 // Multilevel transaction control.
19 function begin_transaction()
21 global $transaction_level; // set in set_global_connection()
23 if (!$transaction_level) {
24 db_query("BEGIN", "could not start a transaction");
29 function commit_transaction()
31 global $transaction_level;
35 if (!$transaction_level) {
36 db_query("COMMIT", "could not commit a transaction");
41 This function is called on end of script execution to cancel
42 all aborted transactions (if any)
44 function cancel_transaction()
46 global $transaction_level;
48 if ($transaction_level) {
49 db_query("ROLLBACK", "could not cancel a transaction");
53 //-----------------------------------------------------------------------------
54 // Update record activity status.
56 function update_record_status($id, $status, $table, $key) {
57 $sql = "UPDATE ".TB_PREF.$table." SET inactive = "
58 . ((int)$status)." WHERE $key=".db_escape($id);
60 db_query($sql, "Can't update record status");
62 //-----------------------------------------------------------------------------
64 // Helper for sql subquery returning running totals from delta tables like stock_moves or bank_trans
66 // $table - table name with optional WHERE clause
67 // $column - delta column
68 // $index - comma delimited list of columns for total grouping and order
69 // Returns running totals with respective index column
71 function running_total_sql($table, $column, $index)
74 return "SELECT daily.$index, daily.$column, (@total:=@total+daily.$column) total
76 (SELECT $index, sum($column) $column FROM $table GROUP BY $index ORDER BY $index) daily,
77 (SELECT @total:=0) total_var";